Dispensing nozzle with non-drip collar



June 17, 1958 POT-[LE 2,839,230

DISPENSING NOZZLE WITH NON-DRIP COLLAR Filed April 9, 1954 INVENTOR.

RALPH K. POTTLE BY 6M 5 5% diam/2. Wad

ATTORNEYS United States Patent DISPENSING NOZZLE WITH NON-DRIP COLLAR Ralph K. Pottle, Georgetown, Conn., assignor to Ameriean Can Company, New York, N. Y., a corporation of New Jersey Application April 9, 1954, Serial No. 422,072

3 Claims. (Cl. 222- -571) The present invention relates to nozzles and closures for cans or containers of various kinds, especially cans or containers for marketing corrosive liquid products such as detergents and the like and has particular reference to nozzles made from a non-corrosive plastic material and having a non-drip pouring face.

An object of the invention is the provision of a nozzle for a container wherein the nozzle is made from a plastic material which is resistant to the corrosive action of the liquid contents of the container and which is elastic or resilient enough to provide a tight closure seal between it and a gasketless closure applied thereto and yet is capable of providing a sharp edged overhanging pouring face which arrests the flow of liquids to provide a nondrip pouring face.

Another object is the provision of such a nozzle which can be readily molded, by existing machinery, into the particular shape having a non-drip pouring ledge.

Numerous other objects and advantages of the invention will be apparent as it is better understood from the following description, which, taken in connection with the accompanying drawings, discloses a preferred embodiment thereof.

Referring to the drawings:

Figure l is a perspective view of a container for liquids having a dispensing nozzle and closure embodying the instant invention;

Fig. 2 is an enlarged elevational view of the nozzle and a portion of the container, with the nozzle closure shown in section; and

Fig. 3 is an enlarged sectional view of the nozzle and a portion of the container to which it is connected.

As a preferred or exemplary embodiment of the in vention the drawings illustrate a sheet metal container 11 (Fig. 1) for corrosive liquid products, such as detergents and the like. The container 11 preferably comprises a cylindrical tubular body 12 having end closures consisting of a bottom 13 and a top convex breast 14 secured thereto in suitable end seams 15.

An upright dripless nozzle 17 (Figs. 1, 2 and 3) having a closure element or cap 18 is carried on the breast 14 to dispense repeated amounts of liquid products from the container. The nozzle 17 is a molded, plastic material, relatively thick walled, tubular member preferably made from polyethylene, although it may be made from other plastic materials which are partially resilient and having at least a slight degree of elasticity. The term plastic as used herein is intended to include all such materials as synthetic and-natural resins, polymers and elastomers.

The nozzle 17 preferably is cylindrical in shape and is formed with a centrally located smooth bore 21 (Fig. 3) which terminates at its upper end in an annular dispensing mouth 22. The lower end of the nozzle is secured to the breast 14 in any suitable manner. For this purpose the drawings show the lower end of the nozzle 17 formed with a surrounding thick compressible flange 24 which is incorporated in an annular channel 25 of a short neck 26 formed on the breast 14 and folded under "ice and over the flange 24 of the nozzle to provide a seam 27 to tightly hold the nozzle in place.

At its top or dispensing end, the nozzle 17 is formed with a non-dn'p, annular, solid material collar 31 (Figs. 2 and 3) which surrounds the dispensing mouth 22 of the nozzle. This collar 31 is formed with a flat, outer, annular elastic or resilient sealing face or seat 32 which immediately surrounds the nozzle mouth 22. At its outer peripheral edge, the sealing seat 32 merges into an outwardly and downwardly, preferably tapered annular face 33 projected from the mouth of the nozzle, although the face 33 may be slightly concave or of other contour if desired. The face 33 terminates in a sharp annular continuous edge 34 which surrounds the nozzle in an outwardly spaced relation thereto and connects with 'a substantially horizontal fiat and annular bottom face 35 which preferably is in a plane normal to the axis of the bore 21 of the nozzle. The bottom face 35 surrounds the outer face of the nozzle and merges into the outer face of the nozzle in an abrupt sharp corner 36.

The sharp annular edge 34 and the flat substantially horizontal bottom face 35 thus set off on the outer face of the nozzle an abrupt overhanging sharp ledge providing a stop barrier against continued gravitational or liquid flow along the outer face of the nozzle. Hence when the nozzle is held upright or turned into a vertical position to terminate a dispensing of the liquid contents of the container any residual liquid that tends to flow by gravity down the outside face of the nozzle is stopped at the sharp overhanging edge 34 of the nozzle and re mains as a globule or drop on the tapered face 33 since it is held in spaced relation to the remaining outer face of the nozzle and is thereby prevented from continuing down the exterior of the nozzle. In this manner dripping of residual liquid from the nozzle mouth is prevented when a pouring action is terminated.

Intermediate the annular collar 31 and the bottom flange 24, the nozzle 17 is formed with screw threads 38 which cooperate with screw threads 39 on the inner face of the closure element or cap 18 to permit of screwing the cap 18 tightly in place on the nozzle to seal the nozzle dispensing mouth 22. The cap 18 may be made of any suitable material, such as metal or non-metal, and preferably is formed with a flat top 41 for sealing engagement against the resilient top face or sealing seat 32 of the nozzle so that the usual gasket required in the cap may be dispensed with.

It is thought that the invention and many of its attendant advantages Will be understood from the foregoing description, and it will be apparent that various changes may be made in the form, construction and arrangement of the parts without departing from the spirit and scope of the invention or sacrificing all of its material advantages, the form hereinbefore described being merely a preferred embodiment thereof.

I claim:

1. A dripless scalable nozzle of resilient plastic material for dispensing a corrosive liquid from a sheet metal container, comprising an upstanding tubular member having an unobstructed outer wall and a smooth walled central bore terminating at its outer end in a relatively wide dispensing month, said nozzle member having a laterally extending peripheral flange on its inner end for securing the nozzle to the open end of said container, a thin laterally extending annular collar integrally formed on the outer end of said nozzle, said collar including a fiat narrow upper sealing face surrounding the nozzle mouth and thence tapering downwardly and outwardly in a smooth annular face terminating in a sharp peripheral edge spaced laterally outwardly from and overhanging the immediately subjacent upstanding unobstructed outer nozzle wall to constitute a stop barrier preventing 7 Q the gravital flow of residual liquid against said nozzle wall, and a gasketless cap for closing said nozzle, said cap having a flat top wall for sealing engagement against said narrow sealing face of said thin collar Without an interposed gasket. t

2. A dripless scalable resilient nozzle structure as defined in claim 1, wherein external screw threads are provided-on the outer Wall of the nozzle and cooperating internal 'screw threads are present on said cap for axially forcing the flat top wall of the cap into sealed pressure engagement against said flat upper sealing face onthe nozzle collar When the cap is screwed home.

3. A sheet metal liquid container having an upstanding plastic dripless'nozzle secured to its open upper end by means of an annular flange on the container enna nehtly seamed to an outwardly extending annular flange on the nozzle -botto'rn, said upstanding nozzle comprising an unobstructed externally threaded outer wall and a smooth walledcentral bore terminating at its outer end in a relatively'wide dispensing mouth, a thin laterally extending-integral collar on the outer end of said nozzle, said collar including-a flat narrow top sealing face surrounding said mouth and thence tapering downwardly and outwardly in a smooth annular face terminating in a sharp peripheral edge spaced laterally outwardly from and overhanging said unobstructed outer wall to constitute a stop barrier to prevent flow of residual liquid against said wall,'and an internally threaded cap for closing said nozzle, said cap having a flat top wall surface for flat sealing engagement against said narrow sealing face of said nozzle collar without the' 'aidbf a'ri interposed gasket.

References Cited in the file of this patent UNITED STATES PATENTS De Brock r Fb. 28, 

